Re: file locking...

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On Sat, 2009-02-28 at 21:46 -0800, bruce wrote:
> Hi.
> 
> Got a bit of a question/issue that I'm trying to resolve. I'm asking this of
> a few groups so bear with me.
> 
> I'm considering a situation where I have multiple processes running, and
> each process is going to access a number of files in a dir. Each process
> accesses a unique group of files, and then writes the group of files to
> another dir. I can easily handle this by using a form of locking, where I
> have the processes lock/read a file and only access the group of files in
> the dir based on the  open/free status of the lockfile.
> 
> However, the issue with the approach is that it's somewhat synchronous. I'm
> looking for something that might be more asynchronous/parallel, in that I'd
> like to have multiple processes each access a unique group of files from the
> given dir as fast as possible.
> 
> So.. Any thoughts/pointers/comments would be greatly appreciated. Any
> pointers to academic research, etc.. would be useful.
> 
> thanks
> 
> 
> 
> 
You could do it one of several ways:

1. Have the files actually written to a subversion/git repository, and
let that handle differences.
2. Store the files in a database as blobs
3. Do something clever with filename suffixes to indicate versions of
the file


Ash
www.ashleysheridan.co.uk


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